This is a little smaller than 450 but with the case and the monitor it is an awesome package for not a lot of cash. Very transportable.
http://www.multirotorforums.com/showthread.php?9374-Product-Review-Fold-N-Fly-Quad
Here's one I am thinking about - the Eyefly Goliath. A brushless gimbal is in the process of being being developed. http://www.eyefly.info/index.php?route=common/home
Tahoe Ed: Do you have more information and pictures on your setup? Thanks.